| (19) |
 |
|
(11) |
EP 1 182 188 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
02.01.2003 Bulletin 2003/01 |
| (43) |
Date of publication A2: |
|
27.02.2002 Bulletin 2002/09 |
| (22) |
Date of filing: 21.08.2001 |
|
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| (84) |
Designated Contracting States: |
|
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
Designated Extension States: |
|
AL LT LV MK RO SI |
| (30) |
Priority: |
22.08.2000 JP 2000250642
09.08.2001 JP 2001241503
09.08.2001 JP 2001241511
|
| (71) |
Applicant: Honshu Chemical Industry Co., Ltd. |
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Wakayama (JP) |
|
| (72) |
Inventors: |
|
- Miyagi, Sachiko, c/o Honshu Chem. Ind. Co., Ltd.
Wakayama-shi, Wakayama (JP)
- Kawano, Seijo, c/o Honshu Chem. Ind. Co., Ltd.
Wakayama-shi, Wakayama (JP)
- Shiomi, Taiichi, c/o Honshu Chem. Ind. Co., Ltd.
Wakayama-shi, Wakayama (JP)
- Maeda, Masayuki, c/o Honshu Chem. Ind. Co., Ltd.
Wakayama-shi, Wakayama (JP)
|
| (74) |
Representative: VOSSIUS & PARTNER |
|
Siebertstrasse 4
81675 München
81675 München (DE) |
|
| |
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| (54) |
Method for producing carboxylic acid tertiary alkyl ester |
(57) A carboxylic acid tertiary alkyl ester (Chemical formula 1) of high purity is obtained
at a high yield ratio, by continually adding an esterification agent possessing a
monovalent acid group, which agent is ester-interchangeable with a tertiary alcohol,
to a mixed fluid of a carboxylic acid and a tertiary alcohol:
R1(COOR2)n